| |
| |
| |
|
|
| import AVFoundation |
|
|
| func createCaptureDeviceInput( |
| cameraDirection: String, backCamera: AVCaptureDevice?, frontCamera: AVCaptureDevice? |
| ) throws |
| -> AVCaptureDeviceInput |
| { |
| var captureDevice: AVCaptureDevice |
| if cameraDirection == "back" { |
| if backCamera != nil { |
| captureDevice = backCamera! |
| } else { |
| throw CaptureError.backCameraUnavailable |
| } |
| } else { |
| if frontCamera != nil { |
| captureDevice = frontCamera! |
| } else { |
| throw CaptureError.frontCameraUnavailable |
| } |
| } |
| let captureDeviceInput: AVCaptureDeviceInput |
| do { |
| captureDeviceInput = try AVCaptureDeviceInput(device: captureDevice) |
| } catch let error as NSError { |
| throw CaptureError.couldNotCaptureInput(error: error) |
| } |
| return captureDeviceInput |
| } |
|
|
| func discoverCaptureDevices() -> [AVCaptureDevice] { |
| if #available(iOS 13.0, *) { |
| return AVCaptureDevice.DiscoverySession( |
| deviceTypes: [ |
| .builtInTripleCamera, .builtInDualCamera, .builtInTelephotoCamera, |
| .builtInTrueDepthCamera, |
| .builtInUltraWideCamera, .builtInDualWideCamera, .builtInWideAngleCamera, |
| ], mediaType: .video, position: .unspecified |
| ).devices |
| } else { |
| return AVCaptureDevice.DiscoverySession( |
| deviceTypes: [ |
| .builtInDualCamera, .builtInWideAngleCamera, .builtInTelephotoCamera, |
| .builtInTrueDepthCamera, |
| ], mediaType: .video, position: .unspecified |
| ).devices |
| } |
| } |
|
|
| func formatStringFromMetadata(_ type: AVMetadataObject.ObjectType) -> String { |
| if #available(iOS 15.4, *) { |
| if type == .gs1DataBar { |
| return "GS1_DATA_BAR" |
| } else if type == .gs1DataBarLimited { |
| return "GS1_DATA_BAR_LIMITED" |
| } else if type == .gs1DataBarExpanded { |
| return "GS1_DATA_BAR_EXPANDED" |
| } |
| } |
| switch type { |
| case AVMetadataObject.ObjectType.upce: |
| return "UPC_E" |
| case AVMetadataObject.ObjectType.ean8: |
| return "EAN_8" |
| case AVMetadataObject.ObjectType.ean13: |
| return "EAN_13" |
| case AVMetadataObject.ObjectType.code39: |
| return "CODE_39" |
| case AVMetadataObject.ObjectType.code93: |
| return "CODE_93" |
| case AVMetadataObject.ObjectType.code128: |
| return "CODE_128" |
| case AVMetadataObject.ObjectType.interleaved2of5: |
| return "ITF" |
| case AVMetadataObject.ObjectType.aztec: |
| return "AZTEC" |
| case AVMetadataObject.ObjectType.dataMatrix: |
| return "DATA_MATRIX" |
| case AVMetadataObject.ObjectType.pdf417: |
| return "PDF_417" |
| case AVMetadataObject.ObjectType.qr: |
| return "QR_CODE" |
| default: |
| return type.rawValue |
| } |
| } |
|
|
